* {
  padding:0;
  margin:0;
  box-sizing: border-box;
}
.tabbar{
  height: 100vh;
  width: 100vw;
}
.tabbar-content{
  height: calc(100vh - 60px);
  overflow-y: scroll;
}
.tabbar-bottom {
  height: 60px;
  border-top:1px solid #ddd;
  display: flex;
}
.tabbar-bottom-item{
  flex:1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.active{
  color:red
}